The Promethea moth (Callosamia promethea) lives in Texas, but not the part where I live – they want the far-eastern reaches of the state, up against Louisiana. They have a wide range in the eastern US, all the way to the Atlantic.
On the day of hatching, the larvae are very big-headed. They tend to be gregarious; they will wander for a while, but then settle in little clumps. They remind me of tiny sheep, the way they line up shoulder-to-shoulder to eat.
Although they’re only a day older than the hatchlings, these guys have noticeably lengthened out – and you can see the clumping behavior. They will stick together like this until they get to the third instar, if they follow the pattern of their cousins… we’ll see as they grow up!
These guys tend to prefer tulip tree and sassafras and spice bush – I have them on sweetgum (liquidambar), as I don’t have easy access to the other trees. They seem to be doing OK so far.